Sewer-trap.



H. G. WILLIAMS.

SEWER TRAP.

APPLIUATION FILED JAN.17, 1910.

1,081,354. Patented Dec. 16, 1913.

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HENRY C. WILLIAMS, 0]? MILWAUKEE, WISCONSIN.

SEWER-TRAP.

Specification of Letters Patent.

Patented Dec. 1 6.1913.

Application filed January 1'2, 1910. Serial No. 538.388.

To all whom it may concern:

Be it known that I, HENRY C. W'ILLIAMS, residing in Milwaukee, in thecounty of Milwaukee and State of WVisconsin, have invented new anduseful Improvements in Sewer-Traps, of which the following is adescription, reference being had to the accompanying drawing, which area part of this specification.

This invention relates to improvements in sewer traps.

The object of this invention is to pro vi de a sewer trap with a checkvalve which is connected to the cover of the casing and is removabletherewith from the casing.

A further objectof the invention is to provide a form of sewer trapvalve which is simple in construction and inexpensive to manufacture andis not liable to get out of order.

VVit-h the above object in view, the invention consists of the sewertrap valve and its parts and combinations, and all equivalents thereof,as hereinafter set forth.

In the accompanying drawing in which the same reference charactersindicate the same parts in the view the figure is a vertical sectionalview of the improved. sewer trap valve, parts broken away to showinterior construction.

Referring to the drawing the numeral 5 indicates the sewer trap casingwhich is pro vided with an inlet opening 6, an outlet opening 7 and acovered opening 8 provided with a screw cap 9 threaded thereto. Theportion of the casing forming the inlet opening is threaded to receivethe end of a pipe 10 which may be of any length desired. The upper endof this pipe is cut smooth to form a valve seat 11 upon which ispositioned a disk valve 12 having a tubular stem 13 extending verticallytherefrom. A head 14: threaded to the upper end of the valve stem ispositioned to be guided in the tubular guide 15 depending from andforming part of the screw cap 9. A nut 16 loosely surrounding the valvestem and threaded to the inner portion of the tubular guide 15 isadapted to guide said valve stem and to connect said valve to the screwcap to be removed therewith. A cap nut 17 threaded to the outer portionof the tubular guide serves to lock the inner nut in place and also actsas a guide for the valve stem.

The portion of the trap casing provided with the outlet opening 7 is ofcomparatively considerable length for convenience in making other pipeconnections therewith.

In operation the water will enter through the inlet opening and lift thevalve from its seat and flow out through the discharge o ')ening. Thevalve stem and. its connection with the screw cap will guide the valveand cause it to open easily and if the flow starts in the oppositedirection the check valve will close by gravity and stop the return ofthe water.

From the foregoing description it will be seen that the trap is verysimple in construc tion and operation and when it is desired to examinethe trap the cap is unscrewed and in removing the cap the valve willalso be moved therewith.

What I claim as my invention is:

1. A sewer trap valve, comprising a casing provided with inlet andoutlet openings, a screw cap forming part of the casing and providedwith a threaded depending tubular guide portion, a tube threaded to thecasing at the inlet opening and forming a valve seat, a valve resting onthe valve seat, a valve stem connected to the valve and extending intothe tubular guide portion, a head threaded to the upper end of the valvestem, a nut threaded to the inner portion of the tubular guide andprovided with an opening through which the valve stem extends and whichis adapted and constructed to engage the head of the valve stem andprevent its withdrawal from the tubular guide, and another nut alsoprovided with an opening through which the valve stem extends threadedto the outer portion of the tubular guide portion.

2. A sewer trap valve, comprising a casing provided with inlet andoutlet openings, a screw cap forming part of the casing and positionedabove one of the openings and provided with a threaded depending tubularguide portion, a disk valve covering the opening beneath the cap andprovided with an upstanding stem having a head formed on its upper endwhich is guided in the tuvalve from its seat When the cap is unbularguide portion and a nut threaded on screwed from the casing. 10 thelower end of the tubular guide and prov In testimony whereof I affix mysignavided with in opening through which the ture, in presence of twoWitnesses.

valve stem extends, said guide being of sufii- HENRY C. WILLIAMS.

cient length to permit the free vertical play Witnesses:

of said valve and the said nut serving to C. H. KEENEY,

engage the head of the stem and lift said ANNA F. SCHMIDTBAUER.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. C.

